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2014 abs anthro anthrofied balls barefoot biped black_and_white black_nose canid canine canis claws crouching digitigrade erection feet front_view fur genitals humanoid_genitalia humanoid_penis male mammal monochrome muscular muscular_anthro muscular_male nude paws pecs penis pose presenting presenting_penis simple_background sitting sketch solo spacecadet spread_legs spreading taku_(balto)white_background wolf